// Copyright (c) 2022 Institute of Software, Chinese Academy of Sciences (ISCAS)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package utils

import (
	"path/filepath"
	"strings"

	gomime "github.com/cubewise-code/go-mime"
)

func GetMimeTypeByFilename(filename string) string {
	ext := filepath.Ext(filename)
	mimeType := gomime.TypeByExtension(ext)
	if len(mimeType) == 0 {
		mimeType = "application/octet-stream"
	}
	return mimeType
}
func ParseCategoryByFilename(filename string) string {

	ext := filepath.Ext(filename)
	mimeType := gomime.TypeByExtension(ext)
	if len(mimeType) == 0 {
		mimeType = "application/octet-stream"
	}

	types := strings.Split(mimeType, "/")
	if len(types) > 0 {
		switch types[0] {
		case "video":
			return "video"
		case "image":
			return "picture"
		}
	}

	switch ext {
	case ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".pdf", ".caj", ".kdh", ".nh", ".txt":
		return "document"
	}

	return "other"
}
